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"Totally Unnecessary": The Latest On The Trial Of Derek Chauvin

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CBS4's Jaime Uchis reports on the latest of the trial of former Minneapolis police officer Derek Chauvin.

Video Transcript

- What is your, you know, view of that use of force during that time period?

RICHARD ZIMMERMAN: Totally unnecessary.

- That's right. Totally unnecessary. That's how the head of the homicide division for the Minneapolis Police Department described Derek Chauvin's actions the day George Floyd died. Day five in the Derek Chauvin murder trial ended in a short session with two veteran law enforcement officers being called to the witness stand. CBS 4's Jaime Uchis has the latest from Minneapolis.

RICHARD ZIMMERMAN: If your knee is on a person's neck, that can kill him.

JAIME UCHIS: The Minneapolis homicide investigator, called to the crime scene hours after George Floyd's death, testified former police officer, Derek Chauvin's treatment of Floyd, defied department policy.

- What is your, you know, view of that use of force during that time period?

RICHARD ZIMMERMAN: Totally unnecessary. Pulling him down to the ground face down and putting your knee on the neck for that amount of time is just uncalled for.

JAIME UCHIS: On cross-examination, Lieutenant Richard Zimmerman faced more questions about the use of force.

ERIC NELSON: In a fight for your life, you, as an officer, are allowed to use whatever force is reasonable and necessary. Correct?

RICHARD ZIMMERMAN: Yes.

JAIME UCHIS: But Zimmerman said Chauvin's actions went against his training.

- Have you ever-- in all the years you've been working for the Minneapolis Police Department-- been trained to kneel on the neck of someone who is handcuffed behind their back in a prolonged position?

RICHARD ZIMMERMAN: No, I haven't.

JAIME UCHIS: Zimmerman said he watched eyewitness videos and police body cams that captured Floyd's struggle.

MATTHEW FRANK: Based on your review of the body cams, did you see any need for Officer Chauvin to improvise by putting his knee on Mr. Floyd for nine minutes and 29 seconds?

RICHARD ZIMMERMAN: No, I did not.

JAIME UCHIS: Zimmerman also testified officers have a duty to render medical aid to detainees in distress. None of the officers on the scene attempted to help Floyd, as he pleaded for his life. Friday's proceeding wrapped a week of emotional testimony from eyewitnesses, EMS workers, dispatchers, and Floyd's girlfriend.

It's not known yet whether Chauvin will testify on his own behalf. The trial resumes Monday. Jaime Uchis, CBS News, Minneapolis.